CN112611756A - Method and system for detecting micro cracks in low-flow-rate liquid container of ship - Google Patents
Method and system for detecting micro cracks in low-flow-rate liquid container of ship Download PDFInfo
- Publication number
- CN112611756A CN112611756A CN202011504073.6A CN202011504073A CN112611756A CN 112611756 A CN112611756 A CN 112611756A CN 202011504073 A CN202011504073 A CN 202011504073A CN 112611756 A CN112611756 A CN 112611756A
- Authority
- CN
- China
- Prior art keywords
- tracer particles
- frame images
- continuous frame
- container
- tracer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 79
- 239000000700 radioactive tracer Substances 0.000 claims abstract description 62
- 230000008859 change Effects 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000015654 memory Effects 0.000 claims description 25
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000008034 disappearance Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a method and a system for detecting micro cracks in a low-flow-rate liquid container of a ship. The method comprises the steps of obtaining continuous frame images of tracer particles in a vessel liquid container, wherein the continuous frame images are shot by a multi-view camera; calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images; superposing the displacement changes under multi-view vision to obtain a three-dimensional track of the tracer particles; the location and size of the container fracture is determined based on the three-dimensional trajectory of each of the tracer particles. The invention utilizes the tracer particle technology, observes the track change of the tracer particles through the image observation system, and adopts the multi-camera to accurately describe the track change of the tracer particles in the depth direction aiming at the track change characteristic of low-flow-velocity particles to obtain three-dimensional track information, thereby being capable of detecting the micro cracks of the container in time when liquid leakage occurs.
Description
Technical Field
The application relates to the technical field of internal anomaly detection of large equipment, in particular to a method and a system for detecting micro cracks in a low-flow-rate liquid container of a ship.
Background
The state of the ship power system, which comprises a plurality of large liquid containers such as various water tanks, condensers, lubricating oil tanks and the like, is related to the overall operation safety of the ship electromechanical system. Defects of such liquid containers, such as leakage, dirt, etc., may affect the operational effectiveness of the liquid container. At present, the water level is monitored by a water level sensor for the liquid leakage condition, but the tiny liquid leakage of the container cannot be measured under the condition that liquid continuously enters the container, and the condition can be found only by manual appearance inspection. Similarly, in the case of internal fouling, manual inspection can be performed only when the vessel is out of service.
Disclosure of Invention
In order to solve the above problems, embodiments of the present application provide a method and a system for detecting a micro crack inside a low-flow-rate liquid container of a ship. Aiming at the tiny cracks in the low-flow-rate liquid container of the ship, the trace particle imaging technology is adopted, and the track change of trace particles is observed by utilizing a multi-camera, so that the early detection of the cracks in the liquid container is realized.
In a first aspect, the embodiment of the present application provides a method for detecting a micro crack inside a low-flow-rate liquid container of a ship, where the method includes:
acquiring continuous frame images of tracer particles in a vessel liquid container, wherein the continuous frame images are shot by a multi-view camera;
calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images;
superposing the displacement changes under multi-view vision to obtain a three-dimensional track of the tracer particles;
the location and size of the container fracture is determined based on the three-dimensional trajectory of each of the tracer particles.
Preferably, the specific gravity of the tracer particles is greater than that of water, and the tracer particles are uniformly put into the liquid in the container from the inlet section of the container.
Preferably, the calculating the displacement change of the tracer particle between adjacent frames in the continuous frame image includes:
and calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images by a characteristic point tracking method.
Preferably, the determining the position and the size of the container fracture based on the three-dimensional trajectory of each of the tracer particles includes:
acquiring abnormal three-dimensional tracks with particle tracks deviating from the main track direction, and determining track disappearance positions of the abnormal three-dimensional tracks;
and performing curve fitting on each lost position of the track to obtain the position and the size of the container crack.
In a second aspect, the present application provides a system for detecting micro cracks inside a low-flow-rate liquid container of a ship, where the system includes:
the acquisition module is used for acquiring continuous frame images of the tracer particles in the ship liquid container, and the continuous frame images are shot by the multi-view camera;
the calculation module is used for calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images;
the superposition module is used for superposing the displacement changes under the multi-view vision to obtain a three-dimensional track of the tracer particles;
and the determining module is used for determining the position and the size of the container crack based on the three-dimensional track of each tracer particle.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method as provided in the first aspect or any one of the possible implementation manners of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method as provided in the first aspect or any one of the possible implementations of the first aspect.
The invention has the beneficial effects that: by utilizing the tracer particle technology, the track change of the tracer particles is observed through the image observation system, and aiming at the change characteristic of the low-flow-velocity particle track, the track change of the tracer particles in the depth direction is accurately described by adopting a multi-camera to obtain three-dimensional track information, so that the micro cracks of the container can be timely detected when liquid leakage occurs. The method has the characteristics of high precision, transient state, non-contact and full-field measurement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for detecting micro cracks inside a low-flow-rate liquid container of a ship according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating an example of the principle of a method for detecting micro cracks inside a low-flow-rate liquid container of a ship according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating an example of a particle trajectory in a side view according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating a principle of a particle trajectory in a top view according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a system for detecting micro cracks inside a low-flow-rate liquid container of a ship according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the following description, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance. The following description provides embodiments of the invention, which may be combined with or substituted for various embodiments, and the invention is thus to be construed as embracing all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then the invention should also be construed as including embodiments that include one or more of all other possible combinations of A, B, C, D, even though such embodiments may not be explicitly recited in the following text.
The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for detecting a micro crack in a low-flow-rate liquid container of a ship according to an embodiment of the present application. In an embodiment of the present application, the method includes:
s101, acquiring continuous frame images of the tracer particles in the ship liquid container, wherein the continuous frame images are shot by a multi-view camera.
The multi-view camera can be understood as a camera provided with a plurality of lenses in the embodiment of the application, and the direction of the object relative to each lens can be determined by comprehensively calculating the object in the image shot by each lens, so that the position of the shot object on a three-dimensional space can be determined.
In one embodiment, the tracer particles have a specific gravity greater than that of water and are uniformly dispensed into the vessel liquid from the inlet section of the vessel.
The tracer particles in the embodiments of the present application may be understood as particles that are put into the liquid in the container to reflect the flow of the flow field.
In the embodiment of the present application, as shown in fig. 2, the multi-view camera may be a binocular stereo vision or a multi-view camera, and is disposed at the upper part of the internal space of the liquid container of the ship, and a special illumination light source is collocated beside the multi-view camera. The method is characterized in that proper amount of tracer particles are uniformly put in an inlet section of a ship liquid container, the specific gravity of the selected tracer particles is slightly larger than that of water, the selected tracer particles are kept in a lower layer area of the liquid in the container under the flowing condition, and the tracer particles can be well observed and shot by a multi-camera in the container under the irradiation of a special illumination light source in the liquid container. The multi-view camera is thus capable of capturing successive frame images of the tracer particles as they flow in the liquid in the vessel.
S102, calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images.
In one possible embodiment, step S102 includes:
and calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images by a characteristic point tracking method.
In the embodiment of the application, the continuous frame images acquired by the multi-view camera continuously track the tracer particles by using the characteristic point tracking algorithm, so that the displacement change condition T of the same tracer particle between adjacent frames can be obtainedi(xi,yi) I 1.. n, from which it can be determined to obtain a continuously varying trajectory for a batch of a particular tracer particle over a period of time. Specifically, the feature point tracking algorithm may adopt a pyramid LK feature point tracking algorithm.
S103, overlapping the displacement changes under the multi-view vision to obtain a three-dimensional track of the tracer particles.
In the embodiment of the application, the multi-view camera can shoot continuous frame images of the tracer particles under the multi-view vision of the plurality of shooting lenses, namely the multi-view camera can obtain the displacement change condition of the same tracer particle under a plurality of angles, so that the multi-view camera can not only obtain the horizontal position change information of image points, but also obtain the depth change information of the image points, and the three-dimensional tracks of the tracer particles are recovered by superposing each displacement change of the same tracer particle.
And S104, determining the position and the size of the container crack based on the three-dimensional track of each tracer particle.
In one possible embodiment, step S104 includes:
acquiring abnormal three-dimensional tracks with particle tracks deviating from the main track direction, and determining track disappearance positions of the abnormal three-dimensional tracks;
and performing curve fitting on each lost position of the track to obtain the position and the size of the container crack.
In the present embodiment, in the case of a micro-crack in a liquid container, since liquid leaks from the micro-crack, trace particle disappearance continues to occur at the leaking liquid. As shown in fig. 3 and 4, reflecting the particle trajectories, that is, a part of the particle trajectories deviate from the main trajectory direction, and a part of the particle trajectories may disappear from the abnormal three-dimensional trajectory deviated from the other normal three-dimensional trajectories. Therefore, by analyzing the track characteristics, the conditions of cracks, liquid leakage and the like can be judged. After all abnormal three-dimensional tracks are determined, curve fitting is carried out on the end disappearance positions of the multiple particle tracks, so that the specific positions and sizes of the micro cracks can be roughly estimated, maintenance personnel can clearly know the specific positions and shapes and sizes of the cracks, and the cracks can be well repaired.
The following will describe in detail the system for detecting micro cracks inside a low-flow-rate liquid container of a ship according to an embodiment of the present invention with reference to fig. 5. It should be noted that, the system for detecting micro cracks inside a low-flow-rate liquid container of a ship shown in fig. 5 is used for executing the method of the embodiment shown in fig. 1 of the present invention, for convenience of description, only the parts related to the embodiment of the present invention are shown, and details of the specific technology are not disclosed, please refer to the embodiment shown in fig. 1 of the present invention.
Referring to fig. 5, fig. 5 is a diagram illustrating a system for detecting micro cracks in a low-flow-rate liquid container of a ship according to an embodiment of the present invention. As shown in fig. 5, the system includes:
an obtaining module 501, configured to obtain continuous frame images of tracer particles in a vessel liquid container, where the continuous frame images are captured by a multi-view camera;
a calculating module 502, configured to calculate a displacement change of the trace particle between adjacent frames in the continuous frame image;
a superposition module 503, configured to superpose the displacement changes in the multi-view vision to obtain a three-dimensional trajectory of the tracer particle;
a determining module 504 for determining a location and a size of a container fracture based on the three-dimensional trajectory of each of the tracer particles.
In an implementation manner, the calculation module 502 is specifically configured to:
and calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images by a characteristic point tracking method.
In an implementation manner, the determining module 504 is specifically configured to:
acquiring abnormal three-dimensional tracks with particle tracks deviating from the main track direction, and determining track disappearance positions of the abnormal three-dimensional tracks;
and performing curve fitting on each lost position of the track to obtain the position and the size of the container crack.
It is clear to a person skilled in the art that the solution according to the embodiments of the invention can be implemented by means of software and/or hardware. The "unit" and "module" in this specification refer to software and/or hardware that can perform a specific function independently or in cooperation with other components, where the hardware may be, for example, a Field-Programmable Gate Array (FPGA), an Integrated Circuit (IC), or the like.
Each processing unit and/or module according to the embodiments of the present invention may be implemented by an analog circuit that implements the functions described in the embodiments of the present invention, or may be implemented by software that executes the functions described in the embodiments of the present invention.
Referring to fig. 6, a schematic structural diagram of an electronic device according to an embodiment of the present invention is shown, where the electronic device may be used to implement the method in the embodiment shown in fig. 1. As shown in fig. 6, the electronic device 600 may include: at least one central processor 601, at least one network interface 604, a user interface 603, a memory 605, at least one communication bus 602.
Wherein a communication bus 602 is used to enable the connection communication between these components.
The user interface 603 may include a Display screen (Display) and a Camera (Camera), and the optional user interface 603 may also include a standard wired interface and a wireless interface.
The network interface 604 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface).
The Memory 605 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 605 includes a non-transitory computer-readable medium. The memory 605 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 605 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, and the like; the storage data area may store data and the like referred to in the above respective method embodiments. The memory 605 may alternatively be at least one storage device located remotely from the central processor 601. As shown in fig. 6, memory 605, which is one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and program instructions.
In the electronic device 600 shown in fig. 6, the user interface 603 is mainly used for providing an input interface for a user to obtain data input by the user; and the processor 601 may be configured to invoke the application program for detecting the micro cracks inside the low-flow-rate liquid container of the ship stored in the memory 605, and specifically perform the following operations:
acquiring continuous frame images of tracer particles in a vessel liquid container, wherein the continuous frame images are shot by a multi-view camera;
calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images;
superposing the displacement changes under multi-view vision to obtain a three-dimensional track of the tracer particles;
the location and size of the container fracture is determined based on the three-dimensional trajectory of each of the tracer particles.
The invention also provides a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVD, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus can be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some service interfaces, devices or units, and may be an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, and the memory may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above description is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure should not be limited thereby. That is, all equivalent changes and modifications made in accordance with the teachings of the present disclosure are intended to be included within the scope of the present disclosure. Embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (7)
1. A detection method for micro cracks in a low-flow-rate liquid container of a ship is characterized by comprising the following steps:
acquiring continuous frame images of tracer particles in a vessel liquid container, wherein the continuous frame images are shot by a multi-view camera;
calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images;
superposing the displacement changes under multi-view vision to obtain a three-dimensional track of the tracer particles;
the location and size of the container fracture is determined based on the three-dimensional trajectory of each of the tracer particles.
2. The method of claim 1, wherein the tracer particles have a specific gravity greater than water and are uniformly dispensed into the vessel liquid from the vessel inlet section.
3. The method of claim 1, wherein said calculating a change in displacement of the tracer particle between adjacent frames in the successive frame images comprises:
and calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images by a characteristic point tracking method.
4. The method of claim 1, wherein determining the location and size of the container fracture based on the three-dimensional trajectory of each of the tracer particles comprises:
acquiring abnormal three-dimensional tracks with particle tracks deviating from the main track direction, and determining track disappearance positions of the abnormal three-dimensional tracks;
and performing curve fitting on each lost position of the track to obtain the position and the size of the container crack.
5. A system for detecting micro-cracks in a low-flow-rate liquid container of a ship, the system comprising:
the acquisition module is used for acquiring continuous frame images of the tracer particles in the ship liquid container, and the continuous frame images are shot by the multi-view camera;
the calculation module is used for calculating the displacement change of the tracer particles between adjacent frames in the continuous frame images;
the superposition module is used for superposing the displacement changes under the multi-view vision to obtain a three-dimensional track of the tracer particles;
and the determining module is used for determining the position and the size of the container crack based on the three-dimensional track of each tracer particle.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1-4 are implemented when the computer program is executed by the processor.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504073.6A CN112611756B (en) | 2020-12-18 | 2020-12-18 | Detection method and system for micro cracks in low-flow-rate liquid container of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504073.6A CN112611756B (en) | 2020-12-18 | 2020-12-18 | Detection method and system for micro cracks in low-flow-rate liquid container of ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112611756A true CN112611756A (en) | 2021-04-06 |
| CN112611756B CN112611756B (en) | 2024-04-02 |
Family
ID=75240553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011504073.6A Active CN112611756B (en) | 2020-12-18 | 2020-12-18 | Detection method and system for micro cracks in low-flow-rate liquid container of ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112611756B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5905568A (en) * | 1997-12-15 | 1999-05-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Stereo imaging velocimetry |
| JP2004226330A (en) * | 2003-01-27 | 2004-08-12 | Tobishima Corp | Tracer and ground water flow measurement method using the tracer |
| CN108474733A (en) * | 2016-01-28 | 2018-08-31 | 西门子医疗保健诊断公司 | Method and apparatus for characterizing sample container and sample |
| CN109854962A (en) * | 2019-01-11 | 2019-06-07 | 常州大学 | The experimental rig estimated suitable for Pipeline Leak risk |
| CN110231248A (en) * | 2019-04-19 | 2019-09-13 | 中国石油大学(北京) | A kind of experimental provision and working method measuring fluid frictional resistance |
-
2020
- 2020-12-18 CN CN202011504073.6A patent/CN112611756B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5905568A (en) * | 1997-12-15 | 1999-05-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Stereo imaging velocimetry |
| JP2004226330A (en) * | 2003-01-27 | 2004-08-12 | Tobishima Corp | Tracer and ground water flow measurement method using the tracer |
| CN108474733A (en) * | 2016-01-28 | 2018-08-31 | 西门子医疗保健诊断公司 | Method and apparatus for characterizing sample container and sample |
| CN109854962A (en) * | 2019-01-11 | 2019-06-07 | 常州大学 | The experimental rig estimated suitable for Pipeline Leak risk |
| CN110231248A (en) * | 2019-04-19 | 2019-09-13 | 中国石油大学(北京) | A kind of experimental provision and working method measuring fluid frictional resistance |
Non-Patent Citations (3)
| Title |
|---|
| 吴佩芳;张润生;杜淼;吴利灿;刘宇帆;邵志刚;: "基于粒子图像测速技术的涡旋简易测控", 物理实验, no. 04, 20 April 2020 (2020-04-20), pages 57 - 61 * |
| 柴博森;马文星;卢秀泉;范丽丹;: "基于粒子跟踪测速技术的液力偶合器内部流速测定方法", 农业工程学报, no. 07, 31 July 2011 (2011-07-31), pages 150 - 155 * |
| 黄金堤;李静;肖劲;李明周;严康;: "罐式炉内石油焦排料行为的实验及仿真研究", 炭素技术, no. 01, 28 February 2018 (2018-02-28), pages 47 - 51 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112611756B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10931871B2 (en) | Pipeline detection method and apparatus, and storage medium | |
| US9514574B2 (en) | System and method for determining the extent of a plane in an augmented reality environment | |
| CN105915846B (en) | A kind of the invader monitoring method and system of the multiplexing of list binocular | |
| CN110261410A (en) | A kind of detection device and method of glass lens defect | |
| CN108510528B (en) | Method and device for registration and fusion of visible light and infrared image | |
| CA2725789A1 (en) | Method of and arrangement for blurring an image | |
| JP2019518276A (en) | Failure analysis device and method | |
| CN111178424A (en) | Petrochemical production site safety compliance real-time detection system and method | |
| CN113192063B (en) | Bridge line-shaped monitoring system and bridge line-shaped monitoring method | |
| RU2013140835A (en) | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND PROGRAM | |
| US20180232875A1 (en) | Cosmetic defect evaluation | |
| CN111027519A (en) | Monitoring method and monitoring device for blast furnace tuyere | |
| CN105243662A (en) | Terminal position determining method and terminal equipment | |
| CN114964650A (en) | Gas leakage alarm method and device based on acoustic imaging | |
| Min et al. | Non-contact and real-time dynamic displacement monitoring using smartphone technologies | |
| CN112611756A (en) | Method and system for detecting micro cracks in low-flow-rate liquid container of ship | |
| CN106153004A (en) | A kind of building inclination detection method and device | |
| KR20160044371A (en) | Apparatus and method for automatic water level measurement | |
| US9927225B2 (en) | Measuring dynamic displacement | |
| CN104267203B (en) | The method of testing of a kind of sample and device | |
| CN108513101B (en) | Live gun body analysis system based on step identification | |
| JP2013015337A (en) | Crossover measuring apparatus by means of image processing | |
| JP2016070741A (en) | Defect determination device, and defect determination method | |
| CN104301676A (en) | Method and device for searching for monitored objects and spherical camera | |
| JP5835287B2 (en) | Image analysis apparatus and image analysis method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |